Merge pull request #232 from zk-passport/dev

· refactor to modular circuits
· merge prove and register circuits into a single one (use selectors instead)
· add OFAC check
· add exclusion of a countries list check

app
· improve UI and error handling

sdk
· better typing and deX
· separate web-sdk in two parts: Verifier & Qrcode

contracts
· refactor
· implement @openpassport/contracts sdk and boilerplates